// Pop message from queue completely removing it.
func (ctx *PQContext) Pop(params []string) apis.IResponse {
var err *mpqerr.ErrorResponse
var limit int64 = 1
var asyncId string
popWaitTimeout := ctx.pq.config.PopWaitTimeout
for len(params) > 0 {
switch params[0] {
case PRM_LIMIT:
params, limit, err = mpqproto.ParseInt64Param(params, 1, conf.CFG_PQ.MaxPopBatchSize)
case PRM_POP_WAIT:
params, popWaitTimeout, err = mpqproto.ParseInt64Param(params, 0, conf.CFG_PQ.MaxPopWaitTimeout)
case PRM_ASYNC:
params, asyncId, err = mpqproto.ParseItemId(params)
default:
return mpqerr.UnknownParam(params[0])
}
if err != nil {
return err
}
}
if len(asyncId) > 0 {
return ctx.asyncPop(asyncId, 0, popWaitTimeout, limit, false)
} else {
return ctx.pq.Pop(0, popWaitTimeout, limit, false)
}
}
// UpdateLockById sets a user defined message lock timeout.
// It works only for locked messages.
func (ctx *PQContext) UpdateLockById(params []string) apis.IResponse {
var err *mpqerr.ErrorResponse
var msgId string
var lockTimeout int64 = -1
for len(params) > 0 {
switch params[0] {
case PRM_ID:
params, msgId, err = mpqproto.ParseItemId(params)
case PRM_LOCK_TIMEOUT:
params, lockTimeout, err = mpqproto.ParseInt64Param(params, 0, conf.CFG_PQ.MaxLockTimeout)
default:
return mpqerr.UnknownParam(params[0])
}
if err != nil {
return err
}
}
if len(msgId) == 0 {
return mpqerr.ERR_MSG_ID_NOT_DEFINED
}
if lockTimeout < 0 {
return mpqerr.ERR_MSG_TIMEOUT_NOT_DEFINED
}
return ctx.pq.UpdateLockById(msgId, lockTimeout)
}
// UpdateLockByRcpt updates message lock according to provided receipt.
func (ctx *PQContext) UpdateLockByRcpt(params []string) apis.IResponse {
var err *mpqerr.ErrorResponse
var rcpt string
var lockTimeout int64 = -1
for len(params) > 0 {
switch params[0] {
case PRM_RECEIPT:
params, rcpt, err = mpqproto.ParseReceiptParam(params)
case PRM_LOCK_TIMEOUT:
params, lockTimeout, err = mpqproto.ParseInt64Param(params, 0, conf.CFG_PQ.MaxLockTimeout)
default:
return mpqerr.UnknownParam(params[0])
}
if err != nil {
return err
}
}
if len(rcpt) == 0 {
return mpqerr.ERR_NO_RECEIPT
}
if lockTimeout < 0 {
return mpqerr.ERR_MSG_TIMEOUT_NOT_DEFINED
}
return ctx.pq.UpdateLockByRcpt(rcpt, lockTimeout)
}
func ParsePQConfig(params []string) (*conf.PQConfig, apis.IResponse) {
var err *mpqerr.ErrorResponse
cfg := DefaultPQConfig()
for len(params) > 0 {
switch params[0] {
case CPRM_MSG_TTL:
params, cfg.MsgTtl, err = mpqproto.ParseInt64Param(params, 0, conf.CFG_PQ.MaxMessageTTL)
case CPRM_MAX_MSG_SIZE:
params, cfg.MaxMsgSize, err = mpqproto.ParseInt64Param(params, 1024, conf.CFG_PQ.MaxMessageSize)
case CPRM_MAX_MSGS_IN_QUEUE:
params, cfg.MaxMsgsInQueue, err = mpqproto.ParseInt64Param(params, 0, math.MaxInt64)
case CPRM_DELIVERY_DELAY:
params, cfg.DeliveryDelay, err = mpqproto.ParseInt64Param(params, 0, conf.CFG_PQ.MaxDeliveryDelay)
case CPRM_POP_LIMIT:
params, cfg.PopCountLimit, err = mpqproto.ParseInt64Param(params, 0, math.MaxInt64)
case CPRM_LOCK_TIMEOUT:
params, cfg.PopLockTimeout, err = mpqproto.ParseInt64Param(params, 0, conf.CFG_PQ.MaxLockTimeout)
case CPRM_FAIL_QUEUE:
params, cfg.PopLimitQueueName, err = mpqproto.ParseItemId(params)
case CPRM_POP_WAIT:
params, cfg.PopWaitTimeout, err = mpqproto.ParseInt64Param(params, 0, conf.CFG_PQ.MaxPopWaitTimeout)
default:
return nil, mpqerr.UnknownParam(params[0])
}
if err != nil {
return nil, err
}
}
return cfg, resp.OK_RESPONSE
}
func (ctx *PQContext) CheckTimeouts(params []string) apis.IResponse {
var err *mpqerr.ErrorResponse
var ts int64 = -1
for len(params) > 0 {
switch params[0] {
case PRM_TIMESTAMP:
params, ts, err = mpqproto.ParseInt64Param(params, 0, math.MaxInt64)
default:
return mpqerr.UnknownParam(params[0])
}
if err != nil {
return err
}
}
if ts < 0 {
return mpqerr.ERR_TS_PARAMETER_NEEDED
}
return ctx.pq.CheckTimeouts(ts)
}
func (ctx *PQContext) SetParamValue(params []string) apis.IResponse {
var err *mpqerr.ErrorResponse
cfg := ctx.pq.config
msgTtl := cfg.MsgTtl
maxMsgsInQueue := cfg.MaxMsgsInQueue
maxMsgSize := cfg.MaxMsgSize
popLimit := cfg.PopCountLimit
deliveryDelay := cfg.DeliveryDelay
lockTimeout := cfg.PopLockTimeout
failQueue := ""
if len(params) == 0 {
return mpqerr.ERR_CMD_PARAM_NOT_PROVIDED
}
pqParams := &PQueueParams{}
for len(params) > 0 {
switch params[0] {
case CPRM_MSG_TTL:
params, msgTtl, err = mpqproto.ParseInt64Param(params, 1, conf.CFG_PQ.MaxMessageTTL)
pqParams.MsgTTL = &msgTtl
case CPRM_MAX_MSG_SIZE:
params, maxMsgSize, err = mpqproto.ParseInt64Param(params, 1024, conf.CFG_PQ.MaxMessageSize)
pqParams.MaxMsgSize = &maxMsgSize
case CPRM_MAX_MSGS_IN_QUEUE:
params, maxMsgsInQueue, err = mpqproto.ParseInt64Param(params, 0, math.MaxInt64)
pqParams.MaxMsgsInQueue = &maxMsgsInQueue
case CPRM_DELIVERY_DELAY:
params, deliveryDelay, err = mpqproto.ParseInt64Param(params, 0, conf.CFG_PQ.MaxDeliveryDelay)
pqParams.DeliveryDelay = &deliveryDelay
case CPRM_POP_LIMIT:
params, popLimit, err = mpqproto.ParseInt64Param(params, 0, math.MaxInt64)
pqParams.PopCountLimit = &popLimit
case CPRM_LOCK_TIMEOUT:
params, lockTimeout, err = mpqproto.ParseInt64Param(params, 0, conf.CFG_PQ.MaxLockTimeout)
pqParams.PopLockTimeout = &lockTimeout
case CPRM_FAIL_QUEUE:
params, pqParams.FailQueue, err = mpqproto.ParseItemId(params)
pqParams.FailQueue = failQueue
default:
return mpqerr.UnknownParam(params[0])
}
if err != nil {
return err
}
}
return ctx.pq.SetParams(pqParams)
}
// Push message to the queue.
// Pushing message automatically enables auto expiration.
func (ctx *PQContext) Push(params []string) apis.IResponse {
var err *mpqerr.ErrorResponse
var msgId string
var priority int64 = 0
var syncWait bool
var asyncId string
var payload string
cfg := ctx.pq.config
delay := cfg.DeliveryDelay
msgTtl := cfg.MsgTtl
for len(params) > 0 {
switch params[0] {
case PRM_ID:
params, msgId, err = mpqproto.ParseUserItemId(params)
case PRM_PRIORITY:
params, priority, err = mpqproto.ParseInt64Param(params, 0, math.MaxInt64)
case PRM_PAYLOAD:
params, payload, err = mpqproto.ParseStringParam(params, 1, PAYLOAD_LIMIT)
case PRM_DELAY:
params, delay, err = mpqproto.ParseInt64Param(params, 0, conf.CFG_PQ.MaxDeliveryDelay)
case PRM_MSG_TTL:
params, msgTtl, err = mpqproto.ParseInt64Param(params, 0, conf.CFG_PQ.MaxMessageTTL)
case PRM_SYNC_WAIT:
params = params[1:]
syncWait = true
case PRM_ASYNC:
params, asyncId, err = mpqproto.ParseItemId(params)
default:
return mpqerr.UnknownParam(params[0])
}
if err != nil {
return err
}
}
if len(msgId) == 0 {
msgId = ctx.idGen.RandId()
}
if syncWait {
if len(asyncId) == 0 {
res := ctx.pq.Push(msgId, payload, msgTtl, delay, priority)
if !res.IsError() {
ctx.pq.WaitFlush()
}
return res
} else {
go func() {
ctx.asyncGroup.Add(1)
res := ctx.pq.Push(msgId, payload, msgTtl, delay, priority)
if !res.IsError() {
ctx.pq.WaitFlush()
}
ctx.responseWriter.WriteResponse(resp.NewAsyncResponse(asyncId, res))
ctx.asyncGroup.Done()
}()
return resp.NewAsyncAccept(asyncId)
}
}
if len(asyncId) > 0 {
return resp.NewAsyncResponse(asyncId, mpqerr.ERR_ASYNC_PUSH)
}
return ctx.pq.Push(msgId, payload, msgTtl, delay, priority)
}